U.S. Frost Dates by Weather Station

NOAA station USC00463544 · West Virginia

Frost Dates for Glenville, WV

NOAA weather station Glenville (USC00463544), West Virginia · elevation 738 ft (225 m) · hardiness zone 6b*

  • Lower-risk planting dateafter May 15only 1 spring in 10 still has a frost later
  • Typical last frostApril 2550% chance of a frost after it
  • Typical first fall frostOctober 2450% chance of a frost before it
  • Frost-free season180 daystypical year, 32°F
  • Hardiness zone6bcalculated*

The year at a glance

Frost season at Glenville, WVSpring: a frost after April 11 in 9 years out of 10, after April 25 in half of the years, after May 15 in 1 year out of 10. Fall: the first frost comes before October 9 in 1 year out of 10, before October 24 in half of the years, before November 5 in 9 years out of 10. Typical frost-free season: 180 days.JanFebMarAprMayJunJulAugSepOctNovDecLast frost ~Apr 25First frost ~Oct 24Frost season at Glenville, WVSpring: a frost after April 11 in 9 years out of 10, after April 25 in half of the years, after May 15 in 1 year out of 10. Fall: the first frost comes before October 9 in 1 year out of 10, before October 24 in half of the years, before November 5 in 9 years out of 10. Typical frost-free season: 180 days.JFMAMJJASONDLast frost ~Apr 25First frost ~Oct 24
frost likely chance fading 90% → 10% frost-free in a typical yearThe year at a glance. Blue: frost is likely; the gradient fades as the chance drops from 90% to 10%; green: the frost-free part of a typical year.

Frost dates (32°F)

Probability of frost, based on 28 years of NOAA records (1991–2020 normals)
ChanceLast frost in spring afterFirst frost in fall before
10% (unlikely)May 15October 9
50% (typical)April 25October 24
90% (likely)April 11November 5
Frost-free season (32°F, 50% chance)
180 days
Hard frost (28°F), last in spring, 50% chance after
April 11
Hard frost (28°F), first in fall, 50% chance before
November 2

The last 15 years (2006–2020 normals)

Typical last frost April 23 (2 days earlier than the 30-year normal), typical first fall frost October 26 (2 days later). Frost-free season 185 days.

A shorter, more recent NOAA period. The 30-year normals above remain the main reference: 15 years carry more year-to-year noise.

Add these dates to your calendar Yearly reminders for the typical last frost, the lower-risk planting date and the typical first fall frost (.ics).

How the chance of frost changes with the date

Spring at Glenville: chance of a frost after this dateSpring, chance of a frost after the date: 10% May 15, 20% May 8, 30% May 4, 40% April 30, 50% April 25, 60% April 22, 70% April 19, 80% April 16, 90% April 11. Observed last spring frost in recent years: 2021 April 24, 2022 April 29.Spring: last frostChance of a frost after this date10%50%90%Apr 1May 1May 15Apr 25Apr 112021: April 242022: April 29Fall at Glenville: chance of a frost before this dateFall, chance of a frost before the date: 10% October 9, 20% October 14, 30% October 19, 40% October 22, 50% October 24, 60% October 27, 70% October 30, 80% November 1, 90% November 5. Observed first fall frost in recent years: 2021 November 4, 2022 October 9.Fall: first frostChance of a frost before this date10%50%90%Oct 1Nov 1Oct 9Oct 24Nov 52021: November 42022: October 9
Two charts, because spring and fall answer different questions: in spring, the chance that a frost still comes after a date; in fall, the chance that the first frost has already come before it. NOAA publishes these odds from 10% to 90%, so the lines stop there. ◆ marks the actual date in each recent year.

What actually happened in recent years

Observed dates of the last spring and first fall frost (32°F) at this station; ◆ marks them on the charts above
YearLast spring frostFirst fall frost
2021April 24November 4
2022April 29October 9
2023incomplete recordincomplete record
2024incomplete recordincomplete record
2025incomplete recordincomplete record
2026no dataseason not over yet

What these dates mean

May 15 is the cautious spring date for light frost, giving a gardener a ten-percent chance that a frost will occur later and providing a reliable point to set out tender crops. The 50% date is April 25, meaning there is an even chance of a frost later than this date.

In the autumn, October 9 serves as the cautious date to finish harvesting tender crops, with only a ten-percent chance that a frost has already arrived. The 50% date is October 24, indicating an even chance of a frost earlier than this date. The hard-frost 50% dates are April 11 and November 2; a hard frost can damage plants more severely than a light frost because the lower temperature freezes water inside tissues.

How to read the probabilities

The dates are probabilities from 30 years of weather, not a forecast for this year.

  • Spring: "10% after May 15" means that in about one spring out of ten a frost still happens after that date. The 90% date is the earliest: a frost after it happens in most years.
  • Fall: "10% before October 9" means that in about one fall out of ten the first frost arrives before that date.
  • 50% is the typical date: half of the years are earlier, half are later.
  • A light frost (32°F) damages tender plants; a hard frost (28°F) also stops most hardy vegetables.

Nearby weather stations

Map of weather stations near Glenville, WVNumbered nearest stations: 1 — Gassaway, WV — 19 mi; 2 — near Sutton, WV — 20 mi; 3 — West Union, WV — 25 mi; 4 — Spencer, WV — 30 mi; 5 — Buckhannon, WV — 33 mi.OH25 mi · 40 km1. Gassaway, WV — 19 mi12. near Sutton, WV — 20 mi23. West Union, WV — 25 mi34. Spencer, WV — 30 mi45. Buckhannon, WV — 33 mi5
  1. Gassaway, WV 19 mi (30 km)
  2. near Sutton, WV 20 mi (33 km)
  3. West Union, WV 25 mi (40 km)
  4. Spencer, WV 30 mi (48 km)
  5. Buckhannon, WV 33 mi (53 km)

Sources

* Hardiness zone 6b: zone derived from PRISM 2023 grid at the station location (not the official USDA map). Source data: PRISM Group, Oregon State University.

Station coordinates: 38.9339, -80.8317.